sample/smarthome/local/README: fix udp port
sample/smarthome/local/README: fix udp port

- reorder section to match current console layout
- swap broadcast and listen port (broadcast has to match device's port)

Change-Id: I118c96eb02e8b6874ed79ee6037153e35959fee1

actions-on-google/smart-home-local,actions-on-google/smart-home-local,actions-on-google/smart-home-local